Panchenko P. Ground maintenance standards railway track in the forefront at the accelerated motion

The dissertation is devoted to the development of norms and regulations of railway track maintenance at traffic speeds from 140 to 160 km/hour. In connection with European integration and the necessity of railway traffic speed increase there is an urgent problem of the development of new norms and regulations on railway track maintenance. Dissertation work consists of four basic sections. The problems of track geometry influence on passenger travel, methods of field experiments conduct with the traffic speed more than 140 km/hour, the problems of theoretical modeling of track and rolling stock interaction and others are considered. The scientific novelty of dissertational work is in the improvement of mathematical model of carriage interaction with the track that gives the crew the possibility to model the movement on elastic way with various geometry. Besides, the technique of track position modeling is improved as a result of field measurements, which allow defining the number of measuring devices and their position on the track. For the first time, the passenger comfort and trains safety were analyzed depending upon the track geometry with the speed traffic more than 140 km/hour. The given work has wide practical application at railways of Ukraine. According to its results the Norms and Regulations of Railway Track Maintenance have been developed and introduced into Ukrainian railway documentation.